What killed Americans in 1776? The answer is dramatically different from today

The leading causes of death in 1776 were infectious diseases like smallpox and tuberculosis, driven by lack of antibiotics, vaccines, and modern medical practices. Today, chronic conditions dominate due to advancements in public health, sanitation, and medical technology, with life expectancy rising from 30 to 80 years. Key breakthroughs include vaccines, germ theory, and improved water sanitation.